diff options
Diffstat (limited to 'kernel/cgroup_freezer.c')
-rw-r--r-- | kernel/cgroup_freezer.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c index 6e4280d77429..e95056954498 100644 --- a/kernel/cgroup_freezer.c +++ b/kernel/cgroup_freezer.c | |||
@@ -201,8 +201,8 @@ static void freezer_fork(struct cgroup_subsys *ss, struct task_struct *task) | |||
201 | /* | 201 | /* |
202 | * caller must hold freezer->lock | 202 | * caller must hold freezer->lock |
203 | */ | 203 | */ |
204 | static void check_if_frozen(struct cgroup *cgroup, | 204 | static void update_freezer_state(struct cgroup *cgroup, |
205 | struct freezer *freezer) | 205 | struct freezer *freezer) |
206 | { | 206 | { |
207 | struct cgroup_iter it; | 207 | struct cgroup_iter it; |
208 | struct task_struct *task; | 208 | struct task_struct *task; |
@@ -222,6 +222,10 @@ static void check_if_frozen(struct cgroup *cgroup, | |||
222 | */ | 222 | */ |
223 | if (nfrozen == ntotal) | 223 | if (nfrozen == ntotal) |
224 | freezer->state = CGROUP_FROZEN; | 224 | freezer->state = CGROUP_FROZEN; |
225 | else if (nfrozen > 0) | ||
226 | freezer->state = CGROUP_FREEZING; | ||
227 | else | ||
228 | freezer->state = CGROUP_THAWED; | ||
225 | cgroup_iter_end(cgroup, &it); | 229 | cgroup_iter_end(cgroup, &it); |
226 | } | 230 | } |
227 | 231 | ||
@@ -240,7 +244,7 @@ static int freezer_read(struct cgroup *cgroup, struct cftype *cft, | |||
240 | if (state == CGROUP_FREEZING) { | 244 | if (state == CGROUP_FREEZING) { |
241 | /* We change from FREEZING to FROZEN lazily if the cgroup was | 245 | /* We change from FREEZING to FROZEN lazily if the cgroup was |
242 | * only partially frozen when we exitted write. */ | 246 | * only partially frozen when we exitted write. */ |
243 | check_if_frozen(cgroup, freezer); | 247 | update_freezer_state(cgroup, freezer); |
244 | state = freezer->state; | 248 | state = freezer->state; |
245 | } | 249 | } |
246 | spin_unlock_irq(&freezer->lock); | 250 | spin_unlock_irq(&freezer->lock); |
@@ -301,7 +305,7 @@ static int freezer_change_state(struct cgroup *cgroup, | |||
301 | 305 | ||
302 | freezer = cgroup_freezer(cgroup); | 306 | freezer = cgroup_freezer(cgroup); |
303 | spin_lock_irq(&freezer->lock); | 307 | spin_lock_irq(&freezer->lock); |
304 | check_if_frozen(cgroup, freezer); /* may update freezer->state */ | 308 | update_freezer_state(cgroup, freezer); |
305 | if (goal_state == freezer->state) | 309 | if (goal_state == freezer->state) |
306 | goto out; | 310 | goto out; |
307 | switch (freezer->state) { | 311 | switch (freezer->state) { |